. >> reporter: this is ocd. this is not. so, light 'em up, sports fans. and may the best team win. if you are exhibiting signs, make sure you see a specialist. signs of ocd, believe it or not, can develop as early as preschool age. it is not diagnosed but a blood test. they found a link between strep throat and ocd. >> which causes which? >> i'm trying to think who has the worst superstitions on the set? >> robin. >> robin does. >> she has rituals. >> she has rituals. and the rabbit rabbit thing. >>> let's get to the boards. we identify you, robin. we just did. we have some creek pictures coming out of frederick, maryland. showing the flooding in that area. we should mention that the cold air is on its way out. all of the cold air is going to leave snowshowers. this is 40 to 50-below windchills. >>> "good morning maryland," i'm meteorologist lynette charles. and we do have a very blustery day on tap. the rain is pretty much out of here. but we're going to see some snow showers as we head towards tomorrow. look a